I have a 10 year old Arabian gelding who has extremely inconsistent behavior. I'll ride him one day and he's great, on a loose rein, relaxed, does everything I ask of him. Then the next day he is all crazy, trying to run off, not paying any attention, sometimes bucking, running through my aids ect. Then the day after that he'll be right back to being perfect again... This describes how this last week went, but he might be fine for a whole week and then crazy, or for a couple days or whatever, it's all of the place. Same thing when he is being brought into the barn some days (within the same week) he is calm and just great, and other days he goes nuts and has to be backed all the way to the barn. Here is his back history in case it makes a difference: After he was weaned he lived more or less in the same paddock with the same horse for the next five or six years (during this time he received halter training for 3 months at some point) towards the end of this time he was starved, then transported a couple of states away and was separated from his lifelong pasture mate. This is about the time I got him, he was 6, a standing skeleton, with the most severe herd bound behavior I have ever seen, he did not understand how to lead properly and had never been started under saddle. I have rehabilitated and trained him, but this inconsistent, erratic behavior still remains. So any ideas? Could it be blood lines? Or triggers that make him remember past unpleasant experiences? I'd love to hear peoples ideas on this.
His saddle fits him really well, I got a new one a few months ago that is an awesome fit because my old one didn't fit horribly, but it was just a little tight, (I could still get my hand in there but it was quite snug) this one fits him much better and he's happier in it. The bit could be an issue, but if it was why would he be fine some days and not others? He also had a benign bone tumor a little smaller than a ping pong ball on the lower left side of his jaw (in the middle part where an english cavesson would go) I got it removed 2 or 3 years ago after having it x-rayed, the vets did not indicate that it would cause an problems except for possibly growing back (which it didn't) but perhaps it caused some amount of nerve damage that only causes discomfort irregularly? He has been thoroughly checked by a vet more than once (aside from like x-raying his whole body.....which isn't too feasible) and nothing has ever been found.